Display module, manufacturing method thereof and touch display device

Abstract

A display module, a manufacturing method thereof, and a touch display device are provided. The display module includes: a display panel; a touch panel, including a plurality of wirings, the touch panel being located on a display side of the display panel; and a bonding component between the display panel and the touch panel, and configured to bond the display panel and the touch panel. A maximum space between two adjacent wirings of the plurality of wirings of the touch panel is not greater than 10λ, and λ is the wavelength of light emitted by the display panel.

The invention claimed is: 
     
       1. A display module, comprising:
 a display panel; 
 a touch panel, including a plurality of wirings, the touch panel being on a display side of the display panel; and 
 a bonding component between the display panel and the touch panel, and configured to bond the display panel and the touch panel, 
 wherein, in a direction perpendicular to an extending direction of the wirings, a maximum space between two adjacent wirings of the plurality of wirings of the touch panel is not greater than 10λ, and λ is the wavelength of light emitted by the display panel. 
 
     
     
       2. The display module according to  claim 1 , wherein the display panel comprises an effective display area, an orthographic projection of the effective display area on a plane where the touch panel is located does not overlap with an orthographic projections of the plurality of wirings on the plane. 
     
     
       3. The display module according to  claim 2 , wherein the touch panel comprises a plurality of touch components and a wiring area on a side of the touch components close to an edge of the display module, and the plurality of wirings are arranged in the wiring area and respectively connected to the plurality of touch components. 
     
     
       4. The display module according to  claim 3 , wherein an orthographic projection of an end of the bonding component on the plane falls within an orthographic projection of the wiring area on the plane. 
     
     
       5. The display module according to  claim 3 , wherein at least one of the plurality of wirings comprises a strip-shaped main body portion and at least one protrusion portion on at least one side of the main body portion. 
     
     
       6. The display module according to  claim 5 , wherein each of the plurality of wirings comprises the main body portion and a plurality of protrusion portions on both sides of the main body portion, and the protrusion portions located on opposite sides of two adjacent main body portions have a staggered distribution in an extending direction of the main body portions. 
     
     
       7. The display module according to  claim 6 , wherein at least one of the plurality of protrusions comprises at least an outline of at least one of an arc and a polyline. 
     
     
       8. The display module according to  claim 7 , wherein an orthographic projection of at least one of the plurality of protrusions on the plane have a shape of semicircle. 
     
     
       9. The display module according to  claim 8 , wherein the semicircle has a radius of approximately ½ of a space between the main body portions of two adjacent ones of the plurality of wirings. 
     
     
       10. The display module according to  claim 6 , wherein the main body portion and the protrusion portion in each of the plurality of wirings have an integral structure. 
     
     
       11. The display module according to  claim 5 , wherein the display module comprises a driving circuit located at an edge on one side, in an area in the wiring area close to the driving circuit, the main body portion in a direction perpendicular to the extending direction of the wirings has a line width w≥12 μm. 
     
     
       12. The display module according to  claim 11 , wherein, in the area in the wiring area close to the driving circuit, the line widths of the main body portions of the plurality of wirings are approximately equal. 
     
     
       13. The display module according to  claim 1 , wherein the maximum space d between two adjacent wirings in the plurality of wirings satisfies 3λ≤d≤10λ. 
     
     
       14. The display module according to  claim 13 , wherein the display panel is configured to emit visible light and the maximum space d satisfies 1.14 μm≤d≤7.6 μm. 
     
     
       15. The display module according to  claim 1 , wherein the bonding component comprises an optical clear adhesive. 
     
     
       16. The display module according to  claim 1 , wherein the wirings comprise a reflective conductive material. 
     
     
       17. A touch display device comprising the display module according to  claim 1 . 
     
     
       18. A method for manufacturing a display module, the display module comprising a display panel, a touch panel, and a bonding component, wherein the touch panel is on a display side of the display panel, and the bonding component is between the display panel and the touch panel, and configured to bond the display panel and the touch panel,
 wherein, upon forming the touch panel, the manufacturing method comprises: 
 forming a wiring precursor layer; 
 coating photoresist on the wiring precursor layer; 
 exposing the photoresist through a mask, and developing the exposed photoresist; 
 etching the wiring precursor layer to form a plurality of wirings by using the photoresist pattern obtained after development as a mask, wherein, in a direction perpendicular to the extending direction of the wirings, a maximum space between two adjacent wirings of the plurality of wirings is not greater than 10λ, where λ is the wavelength of light emitted by the display panel; and 
 removing the photoresist.